1.
e4
c5
2.
Nf3
d6
3.
Bb5+
Bd7
4.
Bxd7+
Qxd7
5.
O-O
Nf6
6.
Re1
Nc6
7.
b3
e6
8.
Bb2
Be7
9.
d4
cxd4
10.
Nxd4
d5
11.
Nd2
dxe4
12.
Nxe4
Nxe4
13.
Rxe4
Bf6
14.
Nxc6
Bxb2
15.
Qxd7+
Kxd7
16.
Ne5+
Ke7
17.
Rd1
Rhd8
18.
Rxd8
Rxd8
19.
Nd3
Bd4
20.
Kf1
h5
21.
Nf4
g6
22.
c4
e5
23.
Nd5+
Kd6
24.
f4
f5
25.
Re1
e4
26.
Rd1
Kc5
27.
Nc7
Rd6
28.
Rxd4
Kxd4
29.
Nb5+
1/2-1/2
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Event
Site
Amsterdam
Date
1963.??.??
Round
2
White
Barendregt, Johan
Black
Donner, Jan Hein
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1963.??.??"] [Round "2"] [White "Barendregt, Johan"] [Black "Donner, Jan Hein"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1 Nc6 7. b3 e6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 d5 11. Nd2 dxe4 12. Nxe4 Nxe4 13. Rxe4 Bf6 14. Nxc6 Bxb2 15. Qxd7+ Kxd7 16. Ne5+ Ke7 17. Rd1 Rhd8 18. Rxd8 Rxd8 19. Nd3 Bd4 20. Kf1 h5 21. Nf4 g6 22. c4 e5 23. Nd5+ Kd6 24. f4 f5 25. Re1 e4 26. Rd1 Kc5 27. Nc7 Rd6 28. Rxd4 Kxd4 29. Nb5+ 1/2-1/2